

At the outset of World War I, German U-boats, though numbering only 38, achieved notable successes against British warships but because of the reactions of neutral powers (especially the United States) Germany hesitated before adopting unrestricted U-boat warfare against merchant ships. Germany was the first country to employ submarines in war as substitutes for surface commerce raiders. The destruction of enemy shipping by German U-boats was a spectacular feature of both World Wars I and II. U-boat, German U-boot, abbreviation of Unterseeboot, (“undersea boat”), a German submarine. Learn how the Third Reich utilized U-boats in the Battle of the Atlantic to destroy Allied supply convoys See all videos for this article
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